1 //===-- SymbolFileSymtab.cpp ------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "SymbolFileSymtab.h"
11 #include "lldb/Core/Module.h"
12 #include "lldb/Core/PluginManager.h"
13 #include "lldb/Symbol/CompileUnit.h"
14 #include "lldb/Symbol/Function.h"
15 #include "lldb/Symbol/ObjectFile.h"
16 #include "lldb/Symbol/Symbol.h"
17 #include "lldb/Symbol/SymbolContext.h"
18 #include "lldb/Symbol/Symtab.h"
19 #include "lldb/Symbol/TypeList.h"
20 #include "lldb/Utility/RegularExpression.h"
21 #include "lldb/Utility/Timer.h"
24 using namespace lldb_private;
26 void SymbolFileSymtab::Initialize() {
27 PluginManager::RegisterPlugin(GetPluginNameStatic(),
28 GetPluginDescriptionStatic(), CreateInstance);
31 void SymbolFileSymtab::Terminate() {
32 PluginManager::UnregisterPlugin(CreateInstance);
35 lldb_private::ConstString SymbolFileSymtab::GetPluginNameStatic() {
36 static ConstString g_name("symtab");
40 const char *SymbolFileSymtab::GetPluginDescriptionStatic() {
41 return "Reads debug symbols from an object file's symbol table.";
44 SymbolFile *SymbolFileSymtab::CreateInstance(ObjectFile *obj_file) {
45 return new SymbolFileSymtab(obj_file);
48 size_t SymbolFileSymtab::GetTypes(SymbolContextScope *sc_scope,
50 lldb_private::TypeList &type_list) {
54 SymbolFileSymtab::SymbolFileSymtab(ObjectFile *obj_file)
55 : SymbolFile(obj_file), m_source_indexes(), m_func_indexes(),
56 m_code_indexes(), m_objc_class_name_to_index() {}
58 SymbolFileSymtab::~SymbolFileSymtab() {}
60 uint32_t SymbolFileSymtab::CalculateAbilities() {
61 uint32_t abilities = 0;
63 const Symtab *symtab = m_obj_file->GetSymtab();
65 //----------------------------------------------------------------------
66 // The snippet of code below will get the indexes the module symbol table
67 // entries that are code, data, or function related (debug info), sort
68 // them by value (address) and dump the sorted symbols.
69 //----------------------------------------------------------------------
70 if (symtab->AppendSymbolIndexesWithType(eSymbolTypeSourceFile,
72 abilities |= CompileUnits;
75 if (symtab->AppendSymbolIndexesWithType(
76 eSymbolTypeCode, Symtab::eDebugYes, Symtab::eVisibilityAny,
78 symtab->SortSymbolIndexesByValue(m_func_indexes, true);
79 abilities |= Functions;
82 if (symtab->AppendSymbolIndexesWithType(eSymbolTypeCode, Symtab::eDebugNo,
83 Symtab::eVisibilityAny,
85 symtab->SortSymbolIndexesByValue(m_code_indexes, true);
86 abilities |= Functions;
89 if (symtab->AppendSymbolIndexesWithType(eSymbolTypeData,
91 symtab->SortSymbolIndexesByValue(m_data_indexes, true);
92 abilities |= GlobalVariables;
95 lldb_private::Symtab::IndexCollection objc_class_indexes;
96 if (symtab->AppendSymbolIndexesWithType(eSymbolTypeObjCClass,
97 objc_class_indexes)) {
98 symtab->AppendSymbolNamesToMap(objc_class_indexes, true, true,
99 m_objc_class_name_to_index);
100 m_objc_class_name_to_index.Sort();
107 uint32_t SymbolFileSymtab::GetNumCompileUnits() {
108 // If we don't have any source file symbols we will just have one compile
109 // unit for the entire object file
110 if (m_source_indexes.empty())
113 // If we have any source file symbols we will logically organize the object
114 // symbols using these.
115 return m_source_indexes.size();
118 CompUnitSP SymbolFileSymtab::ParseCompileUnitAtIndex(uint32_t idx) {
121 // If we don't have any source file symbols we will just have one compile
122 // unit for the entire object file
123 if (idx < m_source_indexes.size()) {
124 const Symbol *cu_symbol =
125 m_obj_file->GetSymtab()->SymbolAtIndex(m_source_indexes[idx]);
127 cu_sp.reset(new CompileUnit(m_obj_file->GetModule(), NULL,
128 cu_symbol->GetName().AsCString(), 0,
129 eLanguageTypeUnknown, eLazyBoolNo));
135 SymbolFileSymtab::ParseCompileUnitLanguage(const SymbolContext &sc) {
136 return eLanguageTypeUnknown;
139 size_t SymbolFileSymtab::ParseCompileUnitFunctions(const SymbolContext &sc) {
140 size_t num_added = 0;
141 // We must at least have a valid compile unit
142 assert(sc.comp_unit != NULL);
143 const Symtab *symtab = m_obj_file->GetSymtab();
144 const Symbol *curr_symbol = NULL;
145 const Symbol *next_symbol = NULL;
146 // const char *prefix = m_obj_file->SymbolPrefix();
147 // if (prefix == NULL)
150 // const uint32_t prefix_len = strlen(prefix);
152 // If we don't have any source file symbols we will just have one compile
153 // unit for the entire object file
154 if (m_source_indexes.empty()) {
155 // The only time we will have a user ID of zero is when we don't have and
156 // source file symbols and we declare one compile unit for the entire
158 if (!m_func_indexes.empty()) {
161 if (!m_code_indexes.empty()) {
162 // StreamFile s(stdout);
163 // symtab->Dump(&s, m_code_indexes);
165 uint32_t idx = 0; // Index into the indexes
166 const uint32_t num_indexes = m_code_indexes.size();
167 for (idx = 0; idx < num_indexes; ++idx) {
168 uint32_t symbol_idx = m_code_indexes[idx];
169 curr_symbol = symtab->SymbolAtIndex(symbol_idx);
171 // Union of all ranges in the function DIE (if the function is
173 AddressRange func_range(curr_symbol->GetAddress(), 0);
174 if (func_range.GetBaseAddress().IsSectionOffset()) {
175 uint32_t symbol_size = curr_symbol->GetByteSize();
176 if (symbol_size != 0 && !curr_symbol->GetSizeIsSibling())
177 func_range.SetByteSize(symbol_size);
178 else if (idx + 1 < num_indexes) {
179 next_symbol = symtab->SymbolAtIndex(m_code_indexes[idx + 1]);
181 func_range.SetByteSize(
182 next_symbol->GetAddressRef().GetOffset() -
183 curr_symbol->GetAddressRef().GetOffset());
188 new Function(sc.comp_unit,
189 symbol_idx, // UserID is the DIE offset
190 LLDB_INVALID_UID, // We don't have any type info
192 curr_symbol->GetMangled(), // Linker/mangled name
193 NULL, // no return type for a code symbol...
194 func_range)); // first address range
196 if (func_sp.get() != NULL) {
197 sc.comp_unit->AddFunction(func_sp);
210 bool SymbolFileSymtab::ParseCompileUnitLineTable(const SymbolContext &sc) {
214 bool SymbolFileSymtab::ParseCompileUnitDebugMacros(const SymbolContext &sc) {
218 bool SymbolFileSymtab::ParseCompileUnitSupportFiles(
219 const SymbolContext &sc, FileSpecList &support_files) {
223 bool SymbolFileSymtab::ParseImportedModules(
224 const SymbolContext &sc, std::vector<ConstString> &imported_modules) {
228 size_t SymbolFileSymtab::ParseFunctionBlocks(const SymbolContext &sc) {
232 size_t SymbolFileSymtab::ParseTypes(const SymbolContext &sc) { return 0; }
234 size_t SymbolFileSymtab::ParseVariablesForContext(const SymbolContext &sc) {
238 Type *SymbolFileSymtab::ResolveTypeUID(lldb::user_id_t type_uid) {
242 bool SymbolFileSymtab::CompleteType(lldb_private::CompilerType &compiler_type) {
246 uint32_t SymbolFileSymtab::ResolveSymbolContext(const Address &so_addr,
247 uint32_t resolve_scope,
249 if (m_obj_file->GetSymtab() == NULL)
252 uint32_t resolved_flags = 0;
253 if (resolve_scope & eSymbolContextSymbol) {
254 sc.symbol = m_obj_file->GetSymtab()->FindSymbolContainingFileAddress(
255 so_addr.GetFileAddress());
257 resolved_flags |= eSymbolContextSymbol;
259 return resolved_flags;
262 //------------------------------------------------------------------
263 // PluginInterface protocol
264 //------------------------------------------------------------------
265 lldb_private::ConstString SymbolFileSymtab::GetPluginName() {
266 return GetPluginNameStatic();
269 uint32_t SymbolFileSymtab::GetPluginVersion() { return 1; }